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Finding the Fourth Proportional to 245.27, 368.06 and 129.67

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Solution

The fourth proportional to 245.27, 368.06 and 129.67 is: 194.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    245.27 : 368.06 = 129.67 : x
  2. Step 2: Convert to fraction form
    245.27/368.06 = 129.67/x
  3. Step 3: Cross multiply
    245.27x = 368.06 × 129.67
  4. Step 4: Simplify right side
    245.27x = 47,724.77
  5. Step 5: Solve for x
    x = 47,724.77/245.27
  6. Step 6: Final answer
    x = 194.58

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.